:root{
  --navy:#0b213a;
  --navy-2:#122f50;
  --blue:#194f80;
  --orange:#e36a21;
  --orange-2:#f28a3a;
  --ink:#18212b;
  --muted:#66717d;
  --light:#f3f5f7;
  --line:#d8dee5;
  --white:#ffffff;
  --shadow:0 16px 40px rgba(8,31,54,.12);
  --radius:18px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter",Arial,sans-serif;
  color:var(--ink);
  background:#fff;
  line-height:1.6;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.section{padding:88px 0}
.eyebrow{
  margin:0 0 14px;
  font:700 14px/1.2 "Inter",sans-serif;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:#a8c7e4;
}
.eyebrow.dark{color:var(--blue)}
h1,h2,h3{font-family:"Barlow Condensed","Arial Narrow",sans-serif;margin-top:0;line-height:1.03}
h2{font-size:clamp(36px,4vw,56px);letter-spacing:-.02em;margin-bottom:20px}
h3{font-size:30px;margin-bottom:10px}
p{margin-top:0}

.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid rgba(11,33,58,.09);
  backdrop-filter:blur(12px);
}
.nav-wrap{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand-logo{height:66px;width:auto;object-fit:contain}
.brand-cluster{display:flex;align-items:center;gap:18px;flex-shrink:0}
.header-phone{font-family:"Barlow Condensed",sans-serif;font-size:22px;font-weight:700;letter-spacing:.02em;color:var(--navy);white-space:nowrap}
.header-phone:hover{color:var(--orange)}
.nav-links{display:flex;align-items:center;gap:23px;font-weight:700;font-size:14px}
.nav-links a{color:var(--navy);transition:.2s ease}
.nav-links a:hover{color:var(--orange)}
.nav-cta{background:var(--orange);color:#fff!important;padding:12px 17px;border-radius:999px;box-shadow:0 8px 18px rgba(227,106,33,.2)}
.menu-btn{display:none;border:0;background:none;font-size:30px;color:var(--navy);cursor:pointer}

.hero{
  position:relative;
  isolation:isolate;
  min-height:720px;
  display:flex;
  align-items:center;
  color:#fff;
  background:url('hero-boiler-room.jpg') center/cover no-repeat;
}
.hero-overlay{
  position:absolute;inset:0;z-index:-1;
  background:linear-gradient(90deg,rgba(5,20,36,.96) 0%,rgba(9,31,53,.90) 48%,rgba(9,31,53,.50) 100%);
}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:center;padding:78px 0}
.hero-copy h1{font-size:clamp(56px,7vw,92px);margin-bottom:24px;letter-spacing:-.03em}
.hero-copy h1 span{color:var(--orange-2)}
.hero-text{max-width:760px;font-size:18px;color:#dbe6ef}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:32px 0}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:9px;font-weight:800;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:#c95c1d}
.btn-secondary{border-color:rgba(255,255,255,.5);color:#fff;background:rgba(255,255,255,.05)}
.btn-secondary:hover{background:rgba(255,255,255,.12)}
.hero-badges{display:flex;flex-wrap:wrap;gap:9px}
.hero-badges span{border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.06);padding:8px 11px;border-radius:999px;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}
.hero-panel{background:rgba(255,255,255,.96);border-radius:24px;padding:28px;box-shadow:0 24px 80px rgba(0,0,0,.25);color:var(--ink)}
.hero-logo{width:100%;max-height:220px;object-fit:contain;margin:0 auto 20px}
.hero-info-card{border-top:3px solid var(--orange);padding-top:22px}
.hero-info-card h2{font-size:36px;color:var(--navy);margin-bottom:12px}
.hero-info-card ul{padding-left:20px;margin:0 0 22px}
.hero-info-card li{margin:8px 0}
.hero-contact{border-radius:12px;background:var(--light);padding:14px 16px;display:flex;flex-direction:column}
.hero-contact a{color:var(--blue);font-weight:700}

.intro-strip{background:#fff}
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:start}
.intro-grid h2{color:var(--navy);margin-bottom:0}
.intro-grid>p{font-size:19px;color:#52606c;padding-top:32px}

.controls-highlight{background:linear-gradient(135deg,#eef3f7,#fff)}
.controls-highlight-grid{display:grid;grid-template-columns:1fr .95fr;gap:60px;align-items:center}
.controls-highlight-copy h2{color:var(--navy)}
.controls-highlight-copy>p{font-size:18px;color:#52606c}
.controls-highlight-photo img{width:100%;height:430px;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}

.section-heading{max-width:820px;margin-bottom:38px}
.section-heading h2{color:var(--navy)}
.section-heading>p{font-size:18px;color:#5c6875}
.service-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.service-card,.project-card,.system-card{background:#fff;border:1px solid #e2e6eb;border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 28px rgba(12,38,63,.07)}
.service-card img{width:100%;height:300px;object-fit:cover}
.service-copy{padding:26px}
.number{font:800 14px/1 "Inter",sans-serif;color:var(--orange);letter-spacing:.12em;margin-bottom:10px}
.service-copy h3,.project-card h3,.system-card h3{color:var(--navy)}
.service-copy p,.project-card p,.system-card p{color:#64707c}

.project-section{background:#f5f7f9}
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.project-card{position:relative;padding-bottom:22px}
.project-card img{width:100%;height:275px;object-fit:cover}
.project-label{position:absolute;top:16px;left:16px;z-index:2;background:var(--navy);color:#fff;border-left:4px solid var(--orange);padding:8px 12px;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.08em}
.project-card h3,.project-card p{padding-left:22px;padding-right:22px}
.project-card h3{margin-top:20px}

.controls-section{background:var(--navy);color:#fff}
.controls-grid{display:grid;grid-template-columns:1fr .9fr;gap:60px;align-items:center}
.controls-copy h2{color:#fff}
.controls-copy>p{color:#d0dce7;font-size:18px}
.platform-tags{display:flex;flex-wrap:wrap;gap:9px;margin:24px 0 30px}
.platform-tags span{padding:9px 12px;border:1px solid rgba(255,255,255,.22);border-radius:999px;font-size:12px;font-weight:800;color:#e8f1f8;background:rgba(255,255,255,.05)}
.dark-tags span{border-color:#d6dee6;color:var(--navy);background:#fff}
.diagnostic-list{border-top:1px solid rgba(255,255,255,.14)}
.diagnostic-list div{display:flex;justify-content:space-between;gap:22px;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.diagnostic-list strong{color:#fff}
.diagnostic-list span{color:#abc0d2;text-align:right}
.controls-photos{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.controls-photos img{width:100%;height:480px;object-fit:cover;border-radius:14px;border:1px solid rgba(255,255,255,.13)}

.boiler-systems-section{background:#fff}
.boiler-systems-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.system-card img{width:100%;height:220px;object-fit:cover}
.system-card h3,.system-card p{padding-left:18px;padding-right:18px}
.system-card h3{font-size:27px;margin:20px 0 8px}
.system-card p{padding-bottom:18px}

.gallery-section{background:#f4f6f8}
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;grid-auto-rows:255px}
.gallery-grid figure{margin:0;position:relative;overflow:hidden;border-radius:16px;box-shadow:var(--shadow);background:#ddd}
.gallery-grid img{width:100%;height:100%;object-fit:cover;transition:.35s ease}
.gallery-grid figure:hover img{transform:scale(1.03)}
.gallery-grid figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 13px;color:#fff;font-size:13px;font-weight:700;background:linear-gradient(transparent,rgba(3,17,30,.86))}
.gallery-large{grid-column:span 2;grid-row:span 2}
.gallery-wide{grid-column:span 2}

.about-section{background:#fff}
.about-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:70px}
.about-grid h2{color:var(--navy)}
.about-grid p{font-size:18px;color:#596674}
.about-list{list-style:none;padding:0;margin:30px 0 0;border-top:1px solid var(--line)}
.about-list li{padding:14px 0;border-bottom:1px solid var(--line)}
.about-list strong{color:var(--navy)}

.contact-section{background:linear-gradient(135deg,#081d32,#12395e);color:#fff}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:start}
.contact-copy h2{color:#fff}
.contact-copy>p{color:#d0dce6;font-size:18px}
.contact-panel{margin-top:30px;border:1px solid rgba(255,255,255,.14);border-radius:16px;overflow:hidden}
.contact-panel>div{padding:15px 18px;border-bottom:1px solid rgba(255,255,255,.12);display:flex;flex-direction:column}
.contact-panel>div:last-child{border-bottom:0}
.label{text-transform:uppercase;letter-spacing:.1em;font-size:11px;color:#9eb8cf;font-weight:800}
.contact-panel a{color:#fff;font-weight:700}
.contact-form{background:#fff;color:var(--ink);padding:28px;border-radius:18px;box-shadow:0 22px 55px rgba(0,0,0,.22)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.contact-form label{display:flex;flex-direction:column;gap:7px;font-weight:700;color:var(--navy);margin-bottom:15px}
.contact-form input,.contact-form textarea{width:100%;border:1px solid #cad3dc;border-radius:9px;padding:13px 14px;font:inherit;color:var(--ink);background:#fbfcfd}
.contact-form input:focus,.contact-form textarea:focus{outline:2px solid rgba(25,79,128,.18);border-color:var(--blue)}
.submit-btn{width:100%;border:0}
.form-note{margin:12px 0 0;font-size:12px;color:#7d8791;text-align:center}

.site-footer{background:#061522;color:#dce6ef;padding:48px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.15fr .65fr .9fr .8fr;gap:34px;align-items:start}
.footer-logo{width:250px;background:#fff;border-radius:10px;padding:8px;margin-bottom:12px}
.footer-grid p{color:#aebdca}
.footer-links,.footer-contact{display:flex;flex-direction:column;gap:9px}
.footer-links a:hover{color:var(--orange)}
.footer-contact a{color:#fff}
.copyright{border-top:1px solid rgba(255,255,255,.09);margin-top:30px;padding-top:18px;color:#899bab;font-size:12px}

@media(max-width:980px){
  .menu-btn{display:block}
  .nav-links{position:absolute;top:88px;left:0;right:0;background:#fff;padding:20px;flex-direction:column;align-items:flex-start;border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .hero-grid,.controls-highlight-grid,.controls-grid,.intro-grid,.about-grid,.contact-grid{grid-template-columns:1fr}
  .hero{min-height:auto}
  .hero-panel{max-width:680px}
  .controls-photos img{height:360px}
  .boiler-systems-grid{grid-template-columns:repeat(2,1fr)}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
  .gallery-large,.gallery-wide{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr}
}

@media(max-width:680px){
  .container{width:min(100% - 28px,1180px)}
  .section{padding:64px 0}
  .brand-logo{height:54px}
  .brand-cluster{gap:10px}
  .header-phone{font-size:17px}
  .nav-wrap{min-height:74px}
  .nav-links{top:74px}
  .hero-grid{padding:62px 0;gap:38px}
  .hero-copy h1{font-size:54px}
  .service-grid,.project-grid,.boiler-systems-grid,.form-row,.footer-grid{grid-template-columns:1fr}
  .controls-photos{grid-template-columns:1fr}
  .controls-photos img{height:320px}
  .gallery-grid{grid-template-columns:1fr;grid-auto-rows:260px}
  .gallery-large,.gallery-wide{grid-column:span 1;grid-row:span 1}
}

@media(max-width:430px){
  .brand-logo{height:46px}
  .brand-cluster{gap:7px}
  .header-phone{font-size:14px}
  .menu-btn{font-size:26px}
}

.location-hero{padding:82px 0 72px;background:linear-gradient(135deg,#081d32,#12395e);color:#fff}
.location-hero h1{color:#fff;max-width:900px}
.location-hero .hero-text{max-width:820px}
.location-main{background:#fff}
.location-services{background:#f5f7f9}
.location-note{padding:18px 20px;border-left:4px solid var(--orange);background:#f4f7fa;border-radius:8px;color:#4f5e6b;margin-top:28px}
.area-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.area-links a{display:inline-block;padding:9px 12px;border:1px solid #d5dde5;border-radius:999px;color:var(--navy);font-weight:700;background:#fff}
.area-links a:hover{border-color:var(--orange);color:var(--orange)}


/* Enhanced regional service pages */
.location-detail-section{background:#fff}
.location-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.location-detail-card{background:#fff;border:1px solid #e2e6eb;border-radius:var(--radius);padding:30px;box-shadow:0 8px 28px rgba(12,38,63,.07)}
.location-detail-card h3{color:var(--navy);font-size:34px}
.location-detail-card>p{color:#5c6875;font-size:17px}
.location-checklist{list-style:none;padding:0;margin:20px 0 0;border-top:1px solid var(--line)}
.location-checklist li{position:relative;padding:13px 0 13px 24px;border-bottom:1px solid var(--line);color:#53606c}
.location-checklist li::before{content:"";position:absolute;left:0;top:21px;width:8px;height:8px;border-radius:50%;background:var(--orange)}
@media(max-width:780px){.location-detail-grid{grid-template-columns:1fr}}

/* SEO service-page additions */
.service-link{display:inline-block;margin-top:14px;color:var(--blue);font-weight:800;text-decoration:none}
.service-link:hover{color:var(--orange)}
.service-path-section{padding-top:56px;padding-bottom:56px}
.service-path-section .section-heading{margin-bottom:20px}


/* Residential heating & HVAC additions */
.residential-section{background:#f5f7f9}
.residential-coverage-section{background:#f5f7f9}
.residential-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn-outline-dark{border:1px solid var(--navy);color:var(--navy);background:transparent}
.btn-outline-dark:hover{background:var(--navy);color:#fff}
.residential-area-links span{display:inline-block;padding:9px 12px;border:1px solid #d5dde5;border-radius:999px;color:var(--navy);font-weight:700;background:#fff}
.residential-license-note{margin-top:20px;color:#5c6875}
.service-card.text-only .service-copy{padding:34px 30px}
.residential-service-links{margin-top:24px}
@media(max-width:780px){.residential-cta{flex-direction:column;align-items:stretch}.residential-cta .btn{text-align:center}}